Simulation of a nuclear major accident at the Tricastin NPP

Rank, NPP code, date	mSv
1 TRI_2020-04-12	102.02
2 TRI_2020-04-11	36.39
3 TRI_2020-05-09	31.49
4 TRI_2020-04-16	24.66
5 TRI_2017-11-28	23.92
6 TRI_2017-10-20	18.83
7 TRI_2021-06-17	18.35
8 TRI_2017-07-30	18.30
9 TRI_2021-06-03	13.66
10 TRI_2017-05-26	13.57
11 TRI_2018-09-12	13.33
12 TRI_2017-11-02	13.14
13 TRI_2020-10-01	13.00
14 TRI_2020-06-26	12.94
15 TRI_2020-11-02	12.11
16 TRI_2020-03-16	11.47
17 TRI_2018-01-05	10.79
18 TRI_2018-11-30	10.62
19 TRI_2020-06-03	10.58
20 TRI_2020-08-16	10.47
21 TRI_2017-09-09	10.34
22 TRI_2021-07-24	9.90
23 TRI_2020-04-17	9.78
24 TRI_2020-06-13	8.81
25 TRI_2021-11-02	8.78
26 TRI_2018-06-04	8.64
27 TRI_2018-09-18	8.59
28 TRI_2018-11-13	8.50
29 TRI_2021-10-01	8.49
30 TRI_2017-04-01	8.39
31 TRI_2021-09-15	8.02
32 TRI_2020-06-24	7.94
33 TRI_2017-08-15	7.59
34 TRI_2017-08-08	7.56
35 TRI_2020-06-27	7.48
36 TRI_2020-08-12	7.44
37 TRI_2018-06-06	7.27
38 TRI_2021-07-12	6.89
39 TRI_2017-02-28	6.78
40 TRI_2017-12-25	6.74
41 TRI_2020-12-06	6.65
42 TRI_2020-07-30	6.55
43 TRI_2020-05-05	6.39
44 TRI_2020-08-21	6.35
45 TRI_2018-10-06	6.22
46 TRI_2020-05-08	6.22
47 TRI_2021-06-18	6.20
48 TRI_2021-06-04	6.16
49 TRI_2017-07-29	6.08
50 TRI_2020-01-06	5.99
51 TRI_2018-12-02	5.98
52 TRI_2020-12-23	5.95
53 TRI_2018-04-22	5.94
54 TRI_2021-02-25	5.87
55 TRI_2020-12-31	5.85
56 TRI_2020-04-01	5.58
57 TRI_2017-11-24	5.53
58 TRI_2021-07-06	5.52
59 TRI_2017-10-21	5.35
60 TRI_2018-07-04	5.24
61 TRI_2017-06-29	5.18
62 TRI_2021-03-30	5.18
63 TRI_2020-09-22	5.05
64 TRI_2020-12-20	5.02
65 TRI_2020-12-29	4.86
66 TRI_2020-04-06	4.85
67 TRI_2018-04-08	4.84
68 TRI_2021-10-24	4.83
69 TRI_2021-05-10	4.78
70 TRI_2017-03-02	4.58
71 TRI_2017-02-26	4.57
72 TRI_2017-03-31	4.53
73 TRI_2018-05-31	4.49
74 TRI_2018-05-23	4.40
75 TRI_2018-09-16	4.35
76 TRI_2017-05-22	4.30
77 TRI_2020-07-31	4.26
78 TRI_2021-03-06	4.20
79 TRI_2021-05-21	4.18
80 TRI_2018-07-01	4.16
81 TRI_2021-05-04	4.15
82 TRI_2018-09-17	4.13
83 TRI_2017-06-30	4.11
84 TRI_2020-02-01	4.03
85 TRI_2017-08-03	4.02
86 TRI_2017-05-29	4.01
87 TRI_2017-07-20	3.93
88 TRI_2018-02-06	3.91
89 TRI_2018-03-04	3.91
90 TRI_2018-10-04	3.89
91 TRI_2020-07-27	3.89
92 TRI_2020-05-04	3.86
93 TRI_2018-10-29	3.83
94 TRI_2020-08-10	3.78
95 TRI_2017-10-11	3.77
96 TRI_2017-08-23	3.76
97 TRI_2017-04-25	3.73
98 TRI_2018-06-05	3.72
99 TRI_2021-05-08	3.70
100 TRI_2020-02-17	3.63
101 TRI_2018-10-30	3.61
102 TRI_2017-08-26	3.60
103 TRI_2021-02-15	3.48
104 TRI_2017-05-27	3.45
105 TRI_2020-10-05	3.45
106 TRI_2021-06-22	3.44
107 TRI_2018-06-10	3.41
108 TRI_2021-05-11	3.33
109 TRI_2018-02-17	3.31
110 TRI_2021-07-23	3.28
111 TRI_2017-08-02	3.27
112 TRI_2017-06-02	3.26
113 TRI_2018-07-27	3.22
114 TRI_2018-08-06	3.21
115 TRI_2017-02-23	3.16
116 TRI_2021-02-05	3.16
117 TRI_2020-10-31	3.15
118 TRI_2017-05-02	3.13
119 TRI_2017-07-10	3.10
120 TRI_2021-02-19	3.03
121 TRI_2018-01-10	2.86
122 TRI_2020-03-01	2.86
123 TRI_2020-11-18	2.86
124 TRI_2017-06-19	2.79
125 TRI_2018-03-24	2.79
126 TRI_2021-12-28	2.73
127 TRI_2018-04-21	2.66
128 TRI_2018-12-19	2.62
129 TRI_2018-01-31	2.61
130 TRI_2020-01-02	2.61
131 TRI_2018-12-13	2.57
132 TRI_2021-01-22	2.57
133 TRI_2017-09-27	2.55
134 TRI_2017-09-14	2.54
135 TRI_2017-10-17	2.54
136 TRI_2018-05-12	2.54
137 TRI_2021-04-11	2.54
138 TRI_2020-06-11	2.51
139 TRI_2020-10-06	2.41
140 TRI_2020-09-14	2.40
141 TRI_2020-11-01	2.40
142 TRI_2020-08-20	2.38
143 TRI_2021-06-16	2.38
144 TRI_2018-12-21	2.35
145 TRI_2021-12-04	2.28
146 TRI_2017-01-31	2.27
147 TRI_2017-09-29	2.26
148 TRI_2017-07-17	2.24
149 TRI_2021-12-23	2.22
150 TRI_2020-09-21	2.20
151 TRI_2017-05-28	2.15
152 TRI_2021-10-18	2.12
153 TRI_2020-01-26	2.11
154 TRI_2018-11-21	2.09
155 TRI_2020-12-28	2.09
156 TRI_2018-07-02	2.07
157 TRI_2020-08-15	2.07
158 TRI_2018-04-20	2.02
159 TRI_2021-09-13	2.01
160 TRI_2020-08-13	2.00
161 TRI_2017-05-04	1.95
162 TRI_2020-09-30	1.94
163 TRI_2021-03-02	1.94
164 TRI_2020-11-11	1.92
165 TRI_2021-12-27	1.92
166 TRI_2017-12-06	1.89
167 TRI_2020-10-04	1.88
168 TRI_2020-08-19	1.84
169 TRI_2018-06-03	1.78
170 TRI_2021-02-09	1.76
171 TRI_2020-02-16	1.70
172 TRI_2020-07-01	1.69
173 TRI_2021-02-08	1.69
174 TRI_2017-06-27	1.67
175 TRI_2018-01-15	1.66
176 TRI_2017-01-02	1.63
177 TRI_2021-08-21	1.63
178 TRI_2017-12-31	1.62
179 TRI_2020-05-01	1.62
180 TRI_2020-06-23	1.62
181 TRI_2017-12-26	1.59
182 TRI_2017-08-25	1.57
183 TRI_2018-05-11	1.57
184 TRI_2020-04-10	1.56
185 TRI_2017-12-07	1.55
186 TRI_2017-01-25	1.54
187 TRI_2018-05-30	1.52
188 TRI_2017-11-22	1.51
189 TRI_2018-05-07	1.51
190 TRI_2021-03-26	1.51
191 TRI_2020-04-30	1.48
192 TRI_2017-04-24	1.47
193 TRI_2021-05-15	1.46
194 TRI_2021-02-14	1.42
195 TRI_2020-09-04	1.37
196 TRI_2021-03-31	1.36
197 TRI_2021-06-21	1.36
198 TRI_2017-03-05	1.34
199 TRI_2017-08-29	1.34
200 TRI_2021-12-25	1.30
201 TRI_2018-08-12	1.29
202 TRI_2020-01-13	1.29
203 TRI_2021-01-19	1.28
204 TRI_2018-08-08	1.27
205 TRI_2020-01-17	1.26
206 TRI_2020-02-07	1.25
207 TRI_2018-10-11	1.24
208 TRI_2021-09-08	1.23
209 TRI_2017-08-27	1.18
210 TRI_2017-06-28	1.17
211 TRI_2017-12-10	1.15
212 TRI_2018-06-09	1.15
213 TRI_2018-09-10	1.15
214 TRI_2021-09-24	1.13
215 TRI_2018-08-16	1.10
216 TRI_2018-02-16	1.09
217 TRI_2020-12-21	1.09
218 TRI_2020-08-09	1.08
219 TRI_2020-04-27	1.06
220 TRI_2020-10-25	1.06
221 TRI_2020-05-11	1.05
222 TRI_2020-10-18	1.05
223 TRI_2020-10-23	1.05
224 TRI_2021-03-03	1.05
225 TRI_2017-12-15	1.02
226 TRI_2020-09-23	1.02
227 TRI_2017-10-19	1.01
228 TRI_2017-05-06	0.98
229 TRI_2020-02-13	0.97
230 TRI_2017-08-07	0.96
231 TRI_2017-09-26	0.96
232 TRI_2018-03-29	0.96
233 TRI_2018-08-28	0.95
234 TRI_2017-02-03	0.93
235 TRI_2017-12-14	0.93
236 TRI_2020-06-01	0.92
237 TRI_2020-06-25	0.92
238 TRI_2021-12-24	0.92
239 TRI_2021-03-11	0.89
240 TRI_2021-06-27	0.89
241 TRI_2017-07-21	0.88
242 TRI_2017-03-22	0.85
243 TRI_2020-06-02	0.83
244 TRI_2017-05-09	0.82
245 TRI_2017-06-21	0.82
246 TRI_2020-02-10	0.82
247 TRI_2017-03-27	0.79
248 TRI_2018-03-08	0.79
249 TRI_2018-11-29	0.79
250 TRI_2020-01-12	0.79
251 TRI_2017-04-07	0.76
252 TRI_2021-04-27	0.76
253 TRI_2018-08-07	0.75
254 TRI_2018-11-11	0.75
255 TRI_2017-06-18	0.74
256 TRI_2017-11-23	0.74
257 TRI_2020-01-27	0.73
258 TRI_2017-04-09	0.71
259 TRI_2017-11-01	0.71
260 TRI_2020-05-13	0.71
261 TRI_2017-02-05	0.70
262 TRI_2017-04-29	0.69
263 TRI_2020-12-08	0.69
264 TRI_2017-08-22	0.68
265 TRI_2017-06-20	0.67
266 TRI_2018-01-16	0.67
267 TRI_2018-04-07	0.67
268 TRI_2021-02-03	0.67
269 TRI_2020-12-17	0.66
270 TRI_2018-04-30	0.65
271 TRI_2018-03-03	0.63
272 TRI_2021-06-26	0.63
273 TRI_2017-08-14	0.61
274 TRI_2018-07-26	0.61
275 TRI_2021-08-13	0.61
276 TRI_2021-08-14	0.61
277 TRI_2017-03-16	0.58
278 TRI_2018-03-30	0.57
279 TRI_2018-06-11	0.57
280 TRI_2020-05-10	0.56
281 TRI_2020-02-27	0.55
282 TRI_2021-09-09	0.55
283 TRI_2017-07-04	0.54
284 TRI_2020-07-29	0.54
285 TRI_2020-11-17	0.54
286 TRI_2017-03-06	0.52
287 TRI_2018-09-20	0.52
288 TRI_2020-04-26	0.52
289 TRI_2021-07-04	0.51
290 TRI_2020-03-05	0.49
291 TRI_2017-05-17	0.47
292 TRI_2021-02-01	0.46
293 TRI_2021-12-22	0.46
294 TRI_2021-07-22	0.45
295 TRI_2018-01-24	0.44
296 TRI_2020-01-14	0.44
297 TRI_2018-03-02	0.43
298 TRI_2018-05-25	0.43
299 TRI_2020-02-09	0.43
300 TRI_2020-07-19	0.42
301 TRI_2018-10-28	0.41
302 TRI_2021-06-01	0.41
303 TRI_2020-05-12	0.40
304 TRI_2020-05-22	0.40
305 TRI_2018-04-12	0.39
306 TRI_2018-06-30	0.39
307 TRI_2017-09-28	0.38
308 TRI_2020-01-09	0.38
309 TRI_2017-08-13	0.37
310 TRI_2020-02-08	0.37
311 TRI_2017-03-30	0.34
312 TRI_2017-06-08	0.34
313 TRI_2021-02-17	0.34
314 TRI_2018-03-05	0.33
315 TRI_2018-07-03	0.33
316 TRI_2020-09-20	0.33
317 TRI_2018-04-27	0.31
318 TRI_2018-01-23	0.30
319 TRI_2017-10-31	0.29
320 TRI_2017-10-13	0.26
321 TRI_2020-01-08	0.26
322 TRI_2020-12-11	0.26
323 TRI_2021-07-29	0.26
324 TRI_2017-07-22	0.25
325 TRI_2021-01-02	0.25
326 TRI_2018-10-26	0.24
327 TRI_2020-02-14	0.24
328 TRI_2021-09-25	0.23
329 TRI_2021-04-08	0.22
330 TRI_2021-10-27	0.22
331 TRI_2017-12-12	0.21
332 TRI_2020-07-21	0.21
333 TRI_2021-06-23	0.19
334 TRI_2017-06-13	0.15
335 TRI_2018-07-20	0.15
336 TRI_2020-01-28	0.15
337 TRI_2017-12-05	0.14
338 TRI_2018-09-28	0.14
339 TRI_2017-08-30	0.13
340 TRI_2017-12-30	0.13
341 TRI_2020-02-15	0.13
342 TRI_2020-11-15	0.13
343 TRI_2021-10-31	0.13
344 TRI_2021-09-06	0.12
345 TRI_2017-04-23	0.11
346 TRI_2018-07-14	0.11
347 TRI_2017-08-28	0.09
348 TRI_2018-08-05	0.09
349 TRI_2017-07-28	0.07
350 TRI_2021-10-04	0.07
351 TRI_2020-02-28	0.06
352 TRI_2017-04-08	0.03
353 TRI_2017-01-01	0.00
354 TRI_2017-01-03	0.00
355 TRI_2017-01-04	0.00
356 TRI_2017-01-05	0.00

Rank, NPP code, date

mSv

1 TRI_2020-04-12

102.02

36.39

31.49

24.66

23.92

18.83

18.35

18.30

13.66

13.57

13.33

13.14

13.00

12.94

12.11

11.47

10.79

10.62

10.58

10.47

10.34

9.90

9.78

8.81

8.78

8.64

8.59

8.50

8.49

8.39

8.02

7.94

7.59

7.56

7.48

7.44

7.27

6.89

6.78

6.74

6.65

6.55

6.39

6.35

6.22

6.22

6.20

6.16

6.08

5.99

5.98

5.95

5.94

5.87

5.85

5.58

5.53

5.52

5.35

5.24

5.18

5.18

5.05

5.02

4.86

4.85

4.84

4.83

4.78

4.58

4.57

4.53

4.49

4.40

4.35

4.30

4.26

4.20

4.18

4.16

4.15

4.13

4.11

4.03

4.02

4.01

3.93

3.91

3.91

3.89

3.89

3.86

3.83

3.78

3.77

3.76

3.73

3.72

3.70

3.63

3.61

3.60

3.48

3.45

3.45

3.44

3.41

3.33

3.31

3.28

3.27

3.26

3.22

3.21

3.16

3.16

3.15

3.13

3.10

3.03

2.86

2.86

2.86

2.79

2.79

2.73

2.66

2.62

2.61

2.61

2.57

2.57

2.55

2.54

2.54

2.54

2.54

2.51

2.41

2.40

2.40

2.38

2.38

2.35

2.28

2.27

2.26

2.24

2.22

2.20

2.15

2.12

2.11

2.09

2.09

2.07

2.07

2.02

2.01

2.00

1.95

1.94

1.94

1.92

1.92

1.89

1.88

1.84

1.78

1.76

1.70

1.69

1.69

1.67

1.66

1.63

1.63

1.62

1.62

1.62

1.59

1.57

1.57

1.56

1.55

1.54

1.52

1.51

1.51

1.51

1.48

1.47

1.46

1.42

1.37

1.36

1.36

1.34

1.34

1.30

1.29

1.29

1.28

1.27

1.26

1.25

1.24

1.23

1.18

1.17

1.15

1.15

1.15

1.13

1.10

1.09

1.09

1.08

1.06

1.06

1.05

1.05

1.05

1.05

1.02

1.02

1.01

0.98

0.97

0.96

0.96

0.96

0.95

0.93

0.93

0.92

0.92

0.92

0.89

0.89

0.88

0.85

0.83

0.82

0.82

0.82

0.79

0.79

0.79

0.79

0.76

0.76

0.75

0.75

0.74

0.74

0.73

0.71

0.71

0.71

0.70

0.69

0.69

0.68

0.67

0.67

0.67

0.67

0.66

0.65

0.63

0.63

0.61

0.61

0.61

0.61

0.58

0.57

0.57

0.56

0.55

0.55

0.54

0.54

0.54

0.52

0.52

0.52

0.51

0.49

0.47

0.46

0.46

0.45

0.44

0.44

0.43

0.43

0.43

0.42

0.41

0.41

0.40

0.40

0.39

0.39

0.38

0.38

0.37

0.37

0.34

0.34

0.34

0.33

0.33

0.33

0.31

0.30

0.29

0.26

0.26

0.26

0.26

0.25

0.25

0.24

0.24

0.23

0.22

0.22

0.21

0.21

0.19

0.15

0.15

0.15

0.14

0.14

0.13

0.13

0.13

0.13

0.13

0.12

0.11

0.11

0.09

0.09

0.07

0.07

0.06

0.03

0.00

0.00

0.00

0.00

ADDITIONAL EXPLANATION ON THE TABLE

1° The radioactivity comes from the passage of the cloud in the hours following an accident;
2° The above individual doses do not include soil irradiation or ingestion of contaminated food after the passage of the cloud;
3° These figures are estimates;
4° SEE COMMENTARY ON LOW AND HIGH DOSES.
5° The calculations are not derived using the map in the illustration, but from another map – of the same format as the one for download on our website to study deposition – which explains some discrepancies between the figure and its illustration.
6° The analysis of the 11 situations producing the maximum fallout allows us to establish the highest risk for a given city, i.e., the consequences of weather situations occurring in 1% of the cases.
7° The above data allow for the identification of the meteorological conditions that would have the worst impact on the area in question, as well as those that would keep radioactivity away. In the event of a major accident at the nuclear power plant concerned, a quick comparison of this analysis with the then prevailing meteorological conditions could be very useful to act as decentralized as possible; local authorities could keep these analyses as ready references to better and more rapidly deploy population protection strategies.

Major accident in one of the four reactors of Tricastin NPP (4 × 2785 MWth)

Possible impact on the inhabitants of :

Neuchâtel (342 km) CHE

See the potential impact on the following geographical areas: Europe (51 countries) Spain France Italy Switzerland

ADDITIONAL EXPLANATION ON THE TABLE

Photo cropped from the work of Marianne Casamance, CC BY-SA 4.0, via Wikimedia Commons

Tricastin, France, pressurized water reactor (PWR), 4 × 2785 megawatts thermal (MWth)